How and Why Height Increases and Body Grows During Puberty stage

Puberty is the single most important growth window you will ever have.

It is the one stage in life where your body is biologically primed to grow faster than at any other time, and the choices you make during this window directly determine whether you reach your full genetic height potential or fall short of it.

This page covers what puberty actually is, how the growth spurt works, and the specific things you should and should not be doing between the ages of 11 and 17 to maximize every inch your body is capable of producing.

What is puberty stage?

Puberty is the developmental stage during which a child’s body transitions into an adult body capable of reproduction.

It is driven by a cascade of hormones that triggers physical transformation — including the most rapid period of height gain in a person’s life.

This typically occurs between ages 8 and 14 for girls and ages 9 and 15 for boys, though the timeline varies. [1]

What are the signs of entering Puberty stage?

Before boys and girls enter puberty stage, the only difference on their bodies is their genitalia.

However, when they reach puberty stage, they are affected differently

When do girls stop growing taller?

Girls normally develop breasts first before pubic hair grows though in some cases, pubic hair grows first.

The first menstruation which occurs between 12 and 13 years is the most obvious sign that a girl has entered puberty stage and it normally occurs after breast and pubic hair development.

Girls normally grow 2-4 inches in a period of about 2 years from the time they started to menstruate then they stop growing.
[2]

When do boys stop growing taller?

In boys, puberty begins with the enlargement of the testicles and penis, followed by pubic and underarm hair, muscle development, voice deepening, and the appearance of facial hair.

The first ejaculation, which usually occurs around age 13, is the clearest hormonal marker.

Boys then experience a growth spurt that lasts roughly 3 years, during which height increases most rapidly, before growth gradually tapers to a stop as the growth plates fuse.

If you are 13, 14, 15, or 16 ; there is a strong chance you are still in puberty and your bones are still actively growing.

Do not assume your height is fixed yet.

How the Puberty Growth Spurt Works

Puberty is initiated by the hypothalamus releasing gonadotropin-releasing hormone (GnRH).

This hormone signals the anterior pituitary gland to secrete luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which in turn stimulate the gonads — the ovaries in girls and the testes in boys to produce sex hormones. [3]

In response to the signals, the gonads release hormones that ;

~ Arouse sexual desire (libido) and the growth function.

~ Develop the brain, muscles, the breasts and private parts.

~ Accelerate the growth of bones and hair.

Body growth and development in height and or weight is rapid during the first few years of puberty and it ends when teenagers develop adult bodies.

During peak growth velocity, boys grow approximately 4.1 inches per year and girls approximately 3.5 inches per year.In boys, growth during puberty adds approximately 30- 31 cm which is equivalent to a foot .

While girls grow approximately between 27 and 30 cm.

Boys also spend more total time in puberty, which, combined with their higher peak growth rate, accounts for the average 10–15 cm height difference between adult men and women.[4]

Growth does not happen uniformly from head to toe.

The sequence typically begins with the feet and hands, moves to the legs, and finishes with the torso.

This is why many teenagers go through a phase of having large feet before the rest of their body catches up and why the

Much of the height gain also comes from increase in torso length.

During puberty, most boys will gain more muscle while girls will gain more fat.

8 Things You Can Do to Maximize Your Height Growth During Puberty

Your genetics set the ceiling, but your lifestyle during puberty determines how close you get to it. These are the controllable factors that matter most.

Prioritize Sleep

According to the National Sleep Foundation, children aged 6 to 13 years should sleep for at least 9 to 11 hours while teenagers aged 14 to 17 years should sleep for at least 8 – 10 hours.

Adults aged 18 years and above should sleep for 7 to 9 hours.

The single largest daily pulse of growth hormone your body produces occurs during the first 90 minutes of deep (slow-wave) sleep. Miss that window consistently and you are cutting your body’s most potent growth signal short.

Research on sleep-deprived rats found that bone formation halted while bone resorption continued meaning their bones were actually losing density without rebuilding.[5]

A separate study on baby lambs found that almost all active bone growth occurs during rest or sleep.

A 2009 Drexel University study of students aged 12 to 18 found that 80% slept fewer than 8 hours per night, with the average teenager sleeping only 7 hours which is below the minimum threshold for optimal growth hormone output.[6]

Cut the late-night screens and caffeinated drinks. No amount of information you absorb at midnight is worth trading your growth window for.

→ More on this: how sleep helps you grow taller

Exercise- but don’t overdo it

Physical activity during puberty promotes bone remodeling, increases bone density, and triggers the release of growth hormone, testosterone, and thyroid hormones ; all of which contribute to height.

Research shows that physically active pre-pubertal boys are on average larger and have greater muscle circumference than their inactive peers.[7]

High-impact activities that involve jumping and running for instance; basketball, football, handball .

Such exercises provide the kind of mechanical loading that stimulates bone formation most effectively when started before puberty and continued through it.

⚠️ Caveat:

Excessive training volume can suppress pubertal growth.

Analysis of elite female gymnasts and competitive wrestlers shows delayed growth and pubertal maturation during intense training seasons, followed by catch-up growth during rest periods.

Sports that prioritize extreme weight control and high energy output carry particular risk.

Three hours of moderate exercise per week is sufficient at a young age — more is not always better.[8]

Exercise in children may provide a conflicting stimuli to body growth simply because its energy costs can reduce the nutrients available or necessary for growth.[9]

→ If you are not involved in any sports activity, there are torso lengthening and leg lengthening exercises you can work into a regular routine during puberty.

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Reading Recomendation

Want a structured exercise routine designed specifically for your growth stage?

The Grow Taller After Puberty Exercise Routine Handbook

Eat Enough of the Right Things

Nutrition is one of the most controllable factors in your height outcome.

The puberty growth spurt dramatically increases your body’s demand for both macronutrients (protein, carbohydrates, fat) and micronutrients (vitamins and minerals).

Undersupply during this window means your body is trying to build bone and muscle without adequate raw materials.[10]

Caloric needs increase significantly during puberty:

Girls aged 9–13 need between 1,400–2,200 calories/day; while those aged 14–18 need between 1,800–2,400 calories/day.

On the other hand, boys aged 9–13 need between 1,600–2,600 calories/day; while those aged 14–18 need between 2,000–3,200 calories/day.

Teenage athletes who regularly participate in vigorous sports training are much higher.
Requiring up to 5,000 calories every day.

Beyond total calories, prioritize calcium and vitamin D for bone density, protein for tissue growth, zinc and iron for hormonal and developmental function, and folate (B9) for cell production.

→ More detail on this: foods to eat to grow taller during and after puberty

Avoid Cigarette Smoking

Nicotine, the primary psychoactive compound in cigarettes constricts blood vessels, reducing oxygen and nutrient delivery to bones.

At high concentrations, it also inhibits osteoblast activity (the cells responsible for building new bone), causing cell death and impairing bone formation.[11]

A study published in the Journal of Epidemiology found that boys who smoked were on average up to one inch shorter than non-smokers.

The same journal published a follow-up study showing that passive smoking (simply because of living indoors with parents who smoke) also stunted children’s growth, based on data collected from over 5,000 primary school children.[12]

Nicotine also impairs intestinal calcium absorption, which compounds the bone-health damage over time.

There is no version of cigarette use that supports optimal growth.

Avoid Alcohol

Studies in humans have confirmed that alcohol suppresses both growth hormone and sex hormone levels in adolescent boys and girls.

Early research established that teenage drinking constrained serum GH and testosterone in boys and serum GH in girls — with documented negative effects on bone mineral density.[13]

Animal studies additionally show that adolescent alcohol consumption interferes with the hypothalamic neuroendocrine systems responsible for triggering and regulating puberty, meaning alcohol can delay or disrupt the very hormonal process that drives your growth spurt.

This is not a minor risk.

Puberty has a finite window, and suppressing it with alcohol cannot be undone.

Avoid Marijuana

Tetrahydrocannabinol (THC), the psychoactive compound in cannabis, suppresses multiple growth-related hormones including growth hormone and testosterone.

A study presented to the European Congress of Endocrinology assessed the impact of marijuana addiction on physical development during puberty.

The researchers found that marijuana-addicted boys had measurably lower growth hormone levels and were on average more than 4 inches shorter than non-using peers by the time they reached age 20.[14]

GH deficiency during puberty slows growth rate and reduces the probability of reaching your genetically determined adult height.

Testosterone is also critical for bone density and the development of male characteristics during this stage.

Suppressing both with regular cannabis use during puberty is a significant and largely irreversible cost.

Growth Hormone Therapy (Clinical Option)

In some cases, a child may be significantly shorter than their peers despite having no diagnosable illness, no malnutrition, and relatively tall parents.

A conditioned sometimes diagnosed as idiopathic short stature ( short stature with no apparent cause).

In 2003, the U.S. Food and Drug Administration approved recombinant human growth hormone (rHGH) therapy as a treatment for such cases.[15]

Studies on pre-pubertal South Korean children with short stature found that those treated with 0.067 mg/kg of rHGH daily for 6 months showed measurably increased growth velocity.[16]

A separate study on adolescent boys treated from the onset of puberty with approximately 42 micrograms of GH daily found significant, sustained height gains over approximately one year.

⚠️ Medical supervision is non-negotiable:

GH therapy carries potential side effects including insulin resistance, joint pain, and long-term hormonal disruption.

It should only be considered when prescribed and administered by a qualified pediatric endocrinologist following proper diagnostic testing. This is not a supplement you source yourself.

Delaying Growth Plate Closure

Growth plates are the cartilage regions at the ends of long bones where new bone tissue is produced are the mechanism through which height increases occur.

Research suggests that certain compounds may delay this fusion process, extending the active growth window.

Compounds studied in this context include resveratrol, tamoxifen, and aromatase inhibitors such as anastrozole (Arimidex) and letrozole.

The proposed mechanism involves inhibiting estrogen’s role in triggering growth plate fusion, since estrogen is responsible for closing the plates in both males and females.

⚠️ These are prescription medications, not supplements.

Tamoxifen is a selective estrogen receptor modulator used primarily in cancer treatment.

Aromatase inhibitors are hormonal drugs with significant side-effect profiles. None of these should be self-administered.

If you believe delayed growth plate closure may be relevant to your situation, this is a conversation to have with a pediatric endocrinologist — not a DIY project.

→ More detail on this topic: how and why growth plates close

Factors That Determine How Tall You Grow During Puberty

Your height outcome during puberty is shaped by a combination of factors you can control and factors you cannot.

Understanding both helps you focus your energy where it counts.

Natural Factors

Genetics.

Genes determine the timing of your pubertal onset, the tempo of your growth spurt, and the ceiling of your adult height.

The correlation between parental height and child height becomes statistically visible by around 18 months of age and strengthens throughout childhood.

If short stature runs in your family, your baseline expectation should account for that — though it does not mean you cannot exceed your genetic range with the right lifestyle choices.

Hormones.

Before puberty, growth hormone and thyroid hormone are the primary drivers of linear growth.

During puberty, rising testosterone in boys significantly enhances spontaneous GH secretion.

In contrast, estrogen operates on a dose-dependent curve in both sexes.

Low levels stimulate IGF-1 production and growth, while high levels accelerate growth plate fusion and terminate growth.

This is one reason girls tend to stop growing earlier than boys — their estrogen levels rise faster and higher.

Precocious puberty.

This refers to puberty that begins before age 8 in girls or age 9 in boys.

Children with precocious puberty may grow very rapidly and appear tall compared to peers initially, but because their growth plates fuse earlier, they often end up shorter as adults.

It is more common in girls than boys and warrants medical evaluation.

Health conditions.

A number of chronic illnesses can slow or disrupt growth during puberty, including:

anemia, diabetes, kidney disease, heart disease, lung disease, hypothyroidism, hypogonadism, cystic fibrosis, asthma, Crohn’s disease, and sickle cell disease.

Chronic severe psychological stress has also been linked to growth disruption through its effects on cortisol and GH secretion.

Environmental Factors

1.Malnutrition.

Undernutrition is the leading cause of stunted growth globally.

In developing countries, it is driven by food scarcity and poverty.

In wealthier countries, it often results from self-imposed caloric restriction, disordered eating, or malabsorption conditions.

A child who is malnourished before age 2 risks permanent developmental consequences.

During puberty, severe malnutrition can delay the onset of the growth spurt and compress the total growth window.

Sleep disorders.

If a child experiences chronic sleep disruption ; from sleep apnea, insomnia, or other disorders during puberty, the nightly GH pulses that drive bone growth are directly reduced.

Identifying and treating sleep disorders during this window is not just a quality-of-life issue; it is a growth issue.

ADHD medication.

A study published in the Medical Journal of Australia found that adolescent boys with ADHD who underwent prolonged stimulant treatment (more than 3 years) showed slower rates of physical development during puberty compared to peers.

Short-term treatment carries lower risk, and in many cases the developmental benefits outweigh the growth-related concerns but this is worth monitoring with a doctor.

Glucocorticoids.

Anti-inflammatory medications such as cortisone, hydrocortisone, and beclomethasone which are used to treat conditions like asthma can inhibit bone formation at high doses, leading to growth suppression in children on long-term treatment.

This is a known side effect and should be discussed with the prescribing physician if the child is in a critical growth window.

Frequently Asked Questions

1. Does Masturbation Stunt Growth?

The short answer: No — there is no scientific evidence that masturbation stunts growth.

This is one of the most common questions teenagers search for online, and it is worth answering directly rather than dancing around it.

The belief that masturbation causes stunted growth has no basis in human physiology.

It does not meaningfully deplete testosterone, does not suppress growth hormone output, and does not affect bone development in any clinically documented way.

The myth likely originates from centuries-old moral frameworks that falsely linked the practice to physical deterioration, not from biology.

That said, the broader question of early adolescent sexual activity is a different matter.

Research conducted at Ohio State University on hamsters, whose sexual maturation timeline is comparable to that of human teenagers, found that adolescent sexual experience was linked to measurable changes in adult stress response and mood regulation.

The proposed mechanism was that sexual activity during adolescence functions as a physiological stressor, triggering an immune response that can, under certain conditions, contribute to systemic inflammation.

2. I’m 16. Am I too late to grow taller?

Probably not.

Most boys are still in their growth spurt at 16, and many continue growing until 18 or even 19.

Girls typically stop earlier, usually 2 years after their first period but individual variation is significant.

The only definitive way to know is a bone age X-ray, which shows whether your growth plates are still open.

If they are, you have time.

3. Does being a tall child mean you will stop growing sooner?

Not necessarily. Height velocity and when growth ends are both determined primarily by bone age, not current height.

A teenager who is tall for their age may simply have entered puberty earlier, which does often correlate with earlier plate fusion.

But being tall does not automatically mean growth is ending.

Bone age assessment remains the most reliable indicator.

4. How much height can I realistically gain during puberty?

On average, boys add approximately 30–31 cm (roughly 12 inches) of total height across their pubertal growth period, and girls add approximately 27–30 cm.

The peak growth velocity or the fastest growth potential is roughly 4.1 inches per year for boys and 3.5 inches per year for girls.

These are averages; individual outcomes vary based on genetics, nutrition, sleep, and the other factors covered on this page.

5. What is the single most important thing I can do to grow taller during puberty?

Sleep.

Not because exercise and nutrition do not matter, they do but because growth hormone peaks during the first 90 minutes of deep sleep, and no other lifestyle change produces the same magnitude of hormonal output.

Teenagers who consistently get 8 to 10 hours of quality sleep are operating their growth systems at full capacity. Everything else builds on that foundation.